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    <title>RGraph: HTML5 canvas graph library - bi-polar chart</title>
    <link rel="stylesheet" href="../css/website.css" type="text/css" media="screen" />
    <link rel="icon" type="image/png" href="/favicon.png">

    <script src="../libraries/RGraph.common.js"></script>
    <script src="../libraries/RGraph.bipolar.js"></script>
    <!--[if IE]><script src="../excanvas/excanvas.compressed.js"></script><![endif]-->

    <script>
        window.onload = function ()
        {
            var left  = [5,6,8,9,12,13,4,9];
            var right = [5,8,4,11,15,26,13,16];
           
            var bipolar1 = new RGraph.Bipolar('bipolar1', left, right);
            
            var gradient = bipolar1.context.createLinearGradient(0,0,475,0);
            gradient.addColorStop(0, 'blue');
            gradient.addColorStop(0.5, 'white');
            gradient.addColorStop(1, 'blue');
        
            bipolar1.Set('chart.colors', ['red']);
            bipolar1.Set('chart.labels', ['Barry', 'John', 'Fred', 'George', 'Rich', 'Larry', 'John', 'Mike']);
            bipolar1.Set('chart.title.left', '2007');
            bipolar1.Set('chart.title.right', '2008');
            bipolar1.Set('chart.title', 'Sales (tooltips, context, zoom)');
            bipolar1.Set('chart.tooltips', ['Barry', 'John', 'Fred', 'George', 'Rich', 'Larry', 'John', 'Mike', 'Barry', 'John', 'Fred', 'George', 'Rich', '<b>Larry</b><br />Larry showed the most improvement<br />year on year, with 13 sales in 2007<br />and 26 sales in 2008', 'John', 'Mike']);
            bipolar1.Set('chart.units.post', 'k');
            bipolar1.Set('chart.contextmenu', [['Zoom', RGraph.Zoom], null, ['Cancel', function () {}]]);
            bipolar1.Set('chart.xmax', 35);
            bipolar1.Set('chart.scale.decimals', 1);
            bipolar1.Set('chart.shadow', true);
            bipolar1.Set('chart.shadow.color', '#666');
            bipolar1.Set('chart.shadow.blur', 3);
            bipolar1.Draw();

            var bipolar2 = new RGraph.Bipolar('bipolar2', left, right);
            bipolar2.Set('chart.labels', ['Fezza', 'Porka', 'CRX', 'RX8', 'DB9', 'Aston', 'F430', 'BMX']);
            bipolar2.Set('chart.title.left', 'July')
            bipolar2.Set('chart.title.right', 'August');
            bipolar2.Set('chart.title', 'Vehicles (context, annotatable)');
            bipolar2.Set('chart.contextmenu', [['Show palette', function (e) {RGraph.Showpalette(e)}], ['Clear', function () {RGraph.Clear(bipolar2.canvas); bipolar2.Draw()}]]);
            bipolar2.Set('chart.units.post', 'k');
            bipolar2.Set('chart.annotatable', true);
            bipolar2.Draw();

            var bipolar3 = new RGraph.Bipolar('bipolar3', [1,2,3,4,5,6,7], [1,2,3,4,5,6,7]);

            var gradient = bipolar3.context.createLinearGradient(0,0,475,0);
            gradient.addColorStop(0,'red');
            gradient.addColorStop(0.5,'white');
            gradient.addColorStop(1,'red');

            bipolar3.Set('chart.labels', ['First', 'Second', 'Third', 'Fourth', 'Fifth', 'Sixth', 'Seventh']);
            bipolar3.Set('chart.title.left', '2007');
            bipolar3.Set('chart.title.right', '2008');
            bipolar3.Set('chart.title', 'A red chart');
            bipolar3.Set('chart.colors', [gradient]);
            bipolar3.Set('chart.gutter', 20);
            
            if (!document.all) {
                bipolar3.Set('chart.zoom.mode', 'thumbnail');
            }

            bipolar3.Draw();

            var bipolar4 = new RGraph.Bipolar('bipolar4', [45,43,46,78,41,42,35], [31,21,25,26,26,26,12]);
            bipolar4.Set('chart.labels', ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun']);
            bipolar4.Set('chart.title.left', 'January');
            bipolar4.Set('chart.title.right', 'February');
            bipolar4.Set('chart.title', 'A bi-polar chart');
            bipolar4.Set('chart.colors', ['#ff0']);
            bipolar4.Set('chart.gutter', 20);
            bipolar4.Draw();

            var bipolar5 = new RGraph.Bipolar('bipolar5', [1,5,4,3,6,7,8,4,9,1,2,4], [5,4,4,5,6,7,8,4,8,6,3,4]);
            bipolar5.Set('chart.labels', ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec']);
            bipolar5.Set('chart.title.left', '2007');
            bipolar5.Set('chart.title.right', '2008');
            bipolar5.Set('chart.title', 'Sales figures comparison');
            bipolar5.Set('chart.colors', ['red']);
            bipolar5.Set('chart.gutter', 20);
            bipolar5.Set('chart.units.pre', '$');
            bipolar5.Draw();
            
            var bipolar6 = new RGraph.Bipolar('bipolar6', [8,5,6,5,3,2,1,4,5,5,6,7], [8,5,6,5,3,2,1,4,5,5,6,7]);
            bipolar6.Set('chart.title.left', 'Male');
            bipolar6.Set('chart.title.right', 'Female');
            bipolar6.Set('chart.title', 'Gender comparison of sales');
            bipolar6.Set('chart.units.pre', '$');
            bipolar6.Set('chart.units.post', 'k');
            bipolar6.Set('chart.labels', ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec']);
            bipolar6.Draw();
        }
    </script>
</head>
<body>

<div id="breadcrumb">
    <a href="../index.html">RGraph: HTML5 canvas graph library</a>
    >
    <a href="./index.html">Examples</a>
    >
    Bi-polar chart
</div>


<h1>RGraph: HTML5 canvas graph library - Bi-polar chart</h1>

    <script>
        if (document.all) {
            document.write('<div style="background-color: #fee; border: 2px dashed red; padding: 5px"><b>Important</b><br /><br /> Internet Explorer does not natively support the HTML5 canvas tag yet, so if you want to see the graphs, you can either:<ul><li>Install <a href="http://code.google.com/chrome/chromeframe/">Google Chrome Frame</a></li><li>Use ExCanvas. This is provided in the RGraph Archive.</li><li>Use another browser entirely. Your choices are Firefox 3.5+, Chrome 2+, Safari 4+ or Opera 10.5+. </li></ul></div>');
        }
    </script>
    
    <div>
        <p>
            The Bi-polar chart is also (possibly more commonly) known as an age-frequency chart or a population pyramid. It allows you to very straight forwardly
            compare two sets of data. For example two years worth of sales figues. Using this type of chart abnormalities will become
            apparent. Other charts that would also be comparable, include a grouped bar chart, a stacked bar chart, and a multiple
            line graph.
        </p>

        <div>
            <ul>
                <li><a href="../docs/bipolar.html">Bi-polar chart API documentation</a></li>
            </ul>
        </div>
        
        
        <div>
            <canvas id="bipolar1" width="475" height="250">[No canvas support]</canvas>
            <canvas id="bipolar2" width="475" height="250">[No canvas support]</canvas>
            <canvas id="bipolar3" width="475" height="250">[No canvas support]</canvas>
            <canvas id="bipolar4" width="475" height="250">[No canvas support]</canvas>
            <canvas id="bipolar5" width="475" height="250">[No canvas support]</canvas>
            <canvas id="bipolar6" width="475" height="250">[No canvas support]</canvas>
        </div>
    </div>

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